[nsp] wan qos and bandwidth management

[Edward B. Dreger]

rb> Date: Wed, 7 Jul 2004 13:00:10 +0300
rb> From: richard bosire

[ editted for brevity ]


rb> My requirements are two fold for now:
rb>
rb> - qos for different customers over the wan between different
rb>   cities
rb> - enforcement of the called capacities across the wan.

RSVP protocol


rb> - My boss thinks that we should go MPLS way [...] does MPLS
rb>   offer QoS or bandwidth management for that matter?

No.  MPLS prepends a tag at ingress, then forwards based on that
tag instead of dst IP.  It doesn't _ipso facto_ include any
special traffic shaping intelligence.  (Yes, one can create MPLS
TE tunnels and apply CoS or Qos on those...)

MPLS has its place, but it's not a miracle cure for all network
problems.  I've tickled some bugs c/o MPLS implementation, and
AboveNet got bitten by MPLS monsters when they deployed it.
Proceed cautiously if you decide to run MPLS.


Eddy
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